2 * draw.c -- drawing routines for XBoard
4 * Copyright 1991 by Digital Equipment Corporation, Maynard,
7 * Enhancements Copyright 1992-2001, 2002, 2003, 2004, 2005, 2006,
8 * 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
10 * The following terms apply to Digital Equipment Corporation's copyright
12 * ------------------------------------------------------------------------
15 * Permission to use, copy, modify, and distribute this software and its
16 * documentation for any purpose and without fee is hereby granted,
17 * provided that the above copyright notice appear in all copies and that
18 * both that copyright notice and this permission notice appear in
19 * supporting documentation, and that the name of Digital not be
20 * used in advertising or publicity pertaining to distribution of the
21 * software without specific, written prior permission.
23 * DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
24 * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
25 * DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
26 * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
27 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
28 * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
30 * ------------------------------------------------------------------------
32 * The following terms apply to the enhanced version of XBoard
33 * distributed by the Free Software Foundation:
34 * ------------------------------------------------------------------------
36 * GNU XBoard is free software: you can redistribute it and/or modify
37 * it under the terms of the GNU General Public License as published by
38 * the Free Software Foundation, either version 3 of the License, or (at
39 * your option) any later version.
41 * GNU XBoard is distributed in the hope that it will be useful, but
42 * WITHOUT ANY WARRANTY; without even the implied warranty of
43 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
44 * General Public License for more details.
46 * You should have received a copy of the GNU General Public License
47 * along with this program. If not, see http://www.gnu.org/licenses/. *
49 *------------------------------------------------------------------------
50 ** See the file ChangeLog for a revision history. */
56 #include <cairo/cairo.h>
57 #include <cairo/cairo-xlib.h>
58 #include <librsvg/rsvg.h>
59 #include <librsvg/rsvg-cairo.h>
64 #else /* not STDC_HEADERS */
65 extern char *getenv();
68 # else /* not HAVE_STRING_H */
70 # endif /* not HAVE_STRING_H */
71 #endif /* not STDC_HEADERS */
78 // [HGM] bitmaps: put before incuding the bitmaps / pixmaps, to know how many piece types there are.
82 #include "pixmaps/pixmaps.h"
87 #include "xevalgraph.h"
99 #define usleep(t) _sleep2(((t)+500)/1000)
103 # define _(s) gettext (s)
104 # define N_(s) gettext_noop (s)
112 Boolean cairoAnimate;
114 cairo_surface_t *csBoardWindow;
115 static cairo_surface_t *pngPieceImages[2][(int)BlackPawn+4]; // png 256 x 256 images
116 static cairo_surface_t *pngPieceBitmaps[2][(int)BlackPawn]; // scaled pieces as used
117 static cairo_surface_t *pngPieceBitmaps2[2][(int)BlackPawn+4]; // scaled pieces in store
118 static RsvgHandle *svgPieces[2][(int)BlackPawn+4]; // vector pieces in store
119 static cairo_surface_t *pngBoardBitmap[2];
120 int useTexture, textureW[2], textureH[2];
122 #define pieceToSolid(piece) &pieceBitmap[SOLID][(piece) % (int)BlackPawn]
123 #define pieceToOutline(piece) &pieceBitmap[OUTLINE][(piece) % (int)BlackPawn]
125 #define White(piece) ((int)(piece) < (int)BlackPawn)
129 } gridSegments[BOARD_RANKS + BOARD_FILES + 2];
137 currBoard = (dual ? &mainOptions[W_BOARD] : &dualOptions[3]);
138 csBoardWindow = DRAWABLE(currBoard);
141 #define BoardSize int
143 InitDrawingSizes (BoardSize boardSize, int flags)
144 { // [HGM] resize is functional now, but for board format changes only (nr of ranks, files)
145 int boardWidth, boardHeight;
147 static int oldWidth, oldHeight;
148 static VariantClass oldVariant;
149 static int oldMono = -1, oldTwoBoards = 0;
150 extern Widget formWidget;
152 if(!formWidget) return;
154 if(oldTwoBoards && !twoBoards) PopDown(DummyDlg);
155 oldTwoBoards = twoBoards;
157 if(appData.overrideLineGap >= 0) lineGap = appData.overrideLineGap;
158 boardWidth = lineGap + BOARD_WIDTH * (squareSize + lineGap);
159 boardHeight = lineGap + BOARD_HEIGHT * (squareSize + lineGap);
161 if(boardWidth != oldWidth || boardHeight != oldHeight) { // do resizing stuff only if size actually changed
163 oldWidth = boardWidth; oldHeight = boardHeight;
167 * Inhibit shell resizing.
169 ResizeBoardWindow(boardWidth, boardHeight, 0);
174 // [HGM] pieces: tailor piece bitmaps to needs of specific variant
177 if(gameInfo.variant != oldVariant) { // and only if variant changed
181 for(p=0; p<=(int)WhiteKing; p++)
182 pngPieceBitmaps[i][p] = pngPieceBitmaps2[i][p]; // defaults
183 if(gameInfo.variant == VariantShogi) {
184 pngPieceBitmaps[i][(int)WhiteCannon] = pngPieceBitmaps2[i][(int)WhiteKing+1];
185 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteKing+2];
186 pngPieceBitmaps[i][(int)WhiteSilver] = pngPieceBitmaps2[i][(int)WhiteKing+3];
187 pngPieceBitmaps[i][(int)WhiteGrasshopper] = pngPieceBitmaps2[i][(int)WhiteKing+4];
188 pngPieceBitmaps[i][(int)WhiteQueen] = pngPieceBitmaps2[i][(int)WhiteLance];
191 if(gameInfo.variant == VariantGothic) {
192 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteSilver];
195 if(gameInfo.variant == VariantSChess) {
196 pngPieceBitmaps[i][(int)WhiteAngel] = pngPieceBitmaps2[i][(int)WhiteFalcon];
197 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteAlfil];
200 oldMono = -10; // kludge to force recreation of animation masks
201 oldVariant = gameInfo.variant;
204 oldMono = appData.monoMode;
208 CreatePNGBoard (char *s, int kind)
210 if(!appData.useBitmaps || s == NULL || *s == 0 || *s == '*') { useTexture &= ~(kind+1); return; }
211 if(strstr(s, ".png")) {
212 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
214 useTexture |= kind + 1; pngBoardBitmap[kind] = img;
215 textureW[kind] = cairo_image_surface_get_width (img);
216 textureH[kind] = cairo_image_surface_get_height (img);
221 char *pngPieceNames[] = // must be in same order as internal piece encoding
222 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
223 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Princess", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "King",
224 "GoldKnight", "GoldLance", "GoldPawn", "GoldSilver", NULL
228 ConvertPixmap (int color, int piece)
230 int i, j, stride, f, colcode[10], w, b;
232 cairo_surface_t *res;
233 XpmPieces *p = builtInXpms + 10;
234 char **pixels = p->xpm[piece % BlackPawn][2*color];
236 sscanf(pixels[0], "%*d %*d %d", &f);
237 sscanf(appData.whitePieceColor+1, "%x", &w);
238 sscanf(appData.blackPieceColor+1, "%x", &b);
239 res = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, p->size, p->size);
240 stride = cairo_image_surface_get_stride(res);
241 buf = (int *) cairo_image_surface_get_data(res);
243 ch[i] = pixels[i+1][0];
245 if(strstr(pixels[i+1], "black")) colcode[i] = 0xFF000000; // 0xFF000000 + (color ? b : 0);
246 if(strstr(pixels[i+1], "white")) colcode[i] = 0xFFFFFFCC; // 0xFF000000 + w;
248 for(i=0; i<p->size; i++) {
249 for(j=0; j<p->size; j++) {
250 char c = pixels[i+f+1][j];
252 for(k=0; ch[k] != c && k < f; k++);
253 buf[i*p->size + j] = colcode[k];
256 cairo_surface_mark_dirty(res);
261 LoadSVG (char *dir, int color, int piece)
264 RsvgHandle *svg=svgPieces[color][piece];
265 RsvgDimensionData svg_dimensions;
266 GError **svgerror=NULL;
267 cairo_surface_t *img;
270 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", dir, color ? "Black" : "White", pngPieceNames[piece]);
272 if(svg || *dir && (svg = rsvg_handle_new_from_file(buf,svgerror))) {
274 rsvg_handle_get_dimensions(svg, &svg_dimensions);
275 img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize, squareSize);
277 cr = cairo_create(img);
278 cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
279 rsvg_handle_render_cairo(svg, cr);
280 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
281 if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
282 pngPieceImages[color][piece] = img;
292 ScaleOnePiece (int color, int piece)
296 cairo_surface_t *img, *cs;
301 if(!svgPieces[color][piece]) { // try to freshly render cached svg pieces first, to supply the source bitmap
302 svgPieces[color][piece] = LoadSVG("", color, piece); // this fills pngPieceImages if we had cached svg with bitmap of wanted size
305 if(!pngPieceImages[color][piece]) { // we don't have cached bitmap (implying we did not have cached svg)
306 if(*appData.pieceDirectory) { // user specified piece directory
307 snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pieceDirectory, color ? "Black" : "White", pngPieceNames[piece]);
308 pngPieceImages[color][piece] = img = cairo_image_surface_create_from_png (buf); // try if there are png pieces there
309 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) { // there were not
310 svgPieces[color][piece] = LoadSVG(appData.pieceDirectory, color, piece); // so try if he has svg there
315 if(!pngPieceImages[color][piece]) { // we still did not manage to acquire a piece bitmap
316 if(!(svgPieces[color][piece] = LoadSVG(appData.svgDirectory, color, piece))) // try to fall back on installed svg
317 DisplayError(_("No default pieces installed\nSelect your own -pieceImageDirectory"), 0); // give up
320 img = pngPieceImages[color][piece];
322 // create new bitmap to hold scaled piece image (and remove any old)
323 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
324 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
325 if(piece <= WhiteKing) pngPieceBitmaps[color][piece] = cs;
327 // scaled copying of the raw png image
328 cr = cairo_create(cs);
329 w = cairo_image_surface_get_width (img);
330 h = cairo_image_surface_get_height (img);
331 cairo_scale(cr, squareSize/w, squareSize/h);
332 cairo_set_source_surface (cr, img, 0, 0);
336 if(!appData.trueColors || !*appData.pieceDirectory && !appData.svgDirectory) { // operate on bitmap to color it (king-size hack...)
337 int stride = cairo_image_surface_get_stride(cs)/4;
338 int *buf = (int *) cairo_image_surface_get_data(cs);
340 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
341 cairo_surface_flush(cs);
342 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
345 unsigned int c = buf[i*stride + j];
346 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
347 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
348 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
349 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
350 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
352 cairo_surface_mark_dirty(cs);
361 for(p=0; pngPieceNames[p]; p++) {
369 { // [HGM] taken out of main
371 CreatePNGBoard(appData.liteBackTextureFile, 1);
372 CreatePNGBoard(appData.darkBackTextureFile, 0);
376 InitDrawingParams (int reloadPieces)
381 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
382 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
383 pngPieceImages[i][p] = NULL;
384 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
385 svgPieces[i][p] = NULL;
390 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
393 Color (char *col, int n)
396 sscanf(col, "#%x", &c);
402 SetPen (cairo_t *cr, float w, char *col, int dash)
404 static const double dotted[] = {4.0, 4.0};
405 static int len = sizeof(dotted) / sizeof(dotted[0]);
406 cairo_set_line_width (cr, w);
407 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
408 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
411 void DrawSeekAxis( int x, int y, int xTo, int yTo )
416 cr = cairo_create (csBoardWindow);
418 cairo_move_to (cr, x, y);
419 cairo_line_to(cr, xTo, yTo );
421 SetPen(cr, 2, "#000000", 0);
426 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
429 void DrawSeekBackground( int left, int top, int right, int bottom )
431 cairo_t *cr = cairo_create (csBoardWindow);
433 cairo_rectangle (cr, left, top, right-left, bottom-top);
435 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
440 GraphExpose(currBoard, left, top, right-left, bottom-top);
443 void DrawSeekText(char *buf, int x, int y)
445 cairo_t *cr = cairo_create (csBoardWindow);
447 cairo_select_font_face (cr, "Sans",
448 CAIRO_FONT_SLANT_NORMAL,
449 CAIRO_FONT_WEIGHT_NORMAL);
451 cairo_set_font_size (cr, 12.0);
453 cairo_move_to (cr, x, y+4);
454 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
455 cairo_show_text( cr, buf);
459 GraphExpose(currBoard, x-5, y-10, 60, 15);
462 void DrawSeekDot(int x, int y, int colorNr)
464 cairo_t *cr = cairo_create (csBoardWindow);
465 int square = colorNr & 0x80;
469 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
471 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
473 SetPen(cr, 2, "#000000", 0);
474 cairo_stroke_preserve(cr);
476 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
477 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
478 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
484 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
488 InitDrawingHandle (Option *opt)
490 csBoardWindow = DRAWABLE(opt);
498 if (lineGap == 0) return;
500 /* [HR] Split this into 2 loops for non-square boards. */
502 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
503 gridSegments[i].x1 = 0;
505 lineGap + BOARD_WIDTH * (squareSize + lineGap);
506 gridSegments[i].y1 = gridSegments[i].y2
507 = lineGap / 2 + (i * (squareSize + lineGap));
510 for (j = 0; j < BOARD_WIDTH + 1; j++) {
511 gridSegments[j + i].y1 = 0;
512 gridSegments[j + i].y2 =
513 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
514 gridSegments[j + i].x1 = gridSegments[j + i].x2
515 = lineGap / 2 + (j * (squareSize + lineGap));
522 /* draws a grid starting around Nx, Ny squares starting at x,y */
524 float odd = (lineGap & 1)/2.;
528 cr = cairo_create (csBoardWindow);
530 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
531 SetPen(cr, lineGap, "#000000", 0);
534 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
536 cairo_move_to (cr, gridSegments[i].x1 + odd, gridSegments[i].y1 + odd);
537 cairo_line_to (cr, gridSegments[i].x2 + odd, gridSegments[i].y2 + odd);
548 DrawBorder (int x, int y, int type, int odd)
554 case 0: col = "#000000"; break;
555 case 1: col = appData.highlightSquareColor; break;
556 case 2: col = appData.premoveHighlightColor; break;
558 cr = cairo_create(csBoardWindow);
559 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
560 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
561 SetPen(cr, lineGap, col, 0);
564 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
568 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
570 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
571 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
573 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
574 if(textureW[kind] < W*squareSize)
575 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
577 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
578 if(textureH[kind] < H*squareSize)
579 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
581 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
586 DrawLogo (Option *opt, void *logo)
588 cairo_surface_t *img;
592 if(!logo || !opt) return;
593 img = cairo_image_surface_create_from_png (logo);
594 w = cairo_image_surface_get_width (img);
595 h = cairo_image_surface_get_height (img);
596 cr = cairo_create(DRAWABLE(opt));
597 cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
598 cairo_set_source_surface (cr, img, 0, 0);
601 cairo_surface_destroy (img);
602 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
606 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
607 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
611 cr = cairo_create (dest);
613 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
614 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
615 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
616 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
619 } else { // evenly colored squares
622 case 0: col = appData.darkSquareColor; break;
623 case 1: col = appData.lightSquareColor; break;
624 case 2: col = "#000000"; break;
626 SetPen(cr, 2.0, col, 0);
627 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
628 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
635 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
640 if ((int)piece < (int) BlackPawn) {
646 if(appData.upsideDown && flipView) { p += p < BlackPawn ? BlackPawn : -BlackPawn; }// swap white and black pieces
647 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
648 cr = cairo_create (dest);
649 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
655 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
659 cr = cairo_create(cs);
660 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
661 if(appData.monoMode) {
662 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
663 cairo_stroke_preserve(cr);
664 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
666 SetPen(cr, 2, marker == 2 ? "#FF0000" : "#FFFF00", 0);
674 DrawDot (int marker, int x, int y, int r)
675 { // used for atomic captures; no need to draw on backup
676 DoDrawDot(csBoardWindow, marker, x, y, r);
677 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
681 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *string, int align)
682 { // basic front-end board-draw function: takes care of everything that can be in square:
683 // piece, background, coordinate/count, marker dot
686 if (piece == EmptySquare) {
687 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
689 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
692 if(align) { // square carries inscription (coord or piece count)
694 cairo_text_extents_t te;
696 cr = cairo_create (csBoardWindow);
697 cairo_select_font_face (cr, "Sans",
698 CAIRO_FONT_SLANT_NORMAL,
699 CAIRO_FONT_WEIGHT_BOLD);
701 cairo_set_font_size (cr, squareSize/4);
702 // calculate where it goes
703 cairo_text_extents (cr, string, &te);
706 xx += squareSize - te.width - te.x_bearing - 1;
707 yy += squareSize - te.height - te.y_bearing - 1;
708 } else if (align == 2) {
709 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
710 } else if (align == 3) {
711 xx += squareSize - te.width -te.x_bearing - 1;
712 yy += -te.y_bearing + 3;
713 } else if (align == 4) {
714 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
717 cairo_move_to (cr, xx-1, yy);
718 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
719 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
720 cairo_show_text (cr, string);
724 if(marker) { // print fat marker dot, if requested
725 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
729 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
731 /* Masks for XPM pieces. Black and white pieces can have
732 different shapes, but in the interest of retaining my
733 sanity pieces must have the same outline on both light
734 and dark squares, and all pieces must use the same
735 background square colors/images. */
737 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
740 InitAnimState (AnimNr anr)
742 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
743 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
744 c_animBufs[anr+4] = csBoardWindow;
745 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
746 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
753 InitAnimState(Player);
757 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
759 static cairo_t *pieceSource;
760 pieceSource = cairo_create (dest);
761 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
762 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
763 else cairo_paint(pieceSource);
764 cairo_destroy (pieceSource);
768 InsertPiece (AnimNr anr, ChessSquare piece)
770 CairoOverlayPiece(piece, c_animBufs[anr]);
774 DrawBlank (AnimNr anr, int x, int y, int startColor)
776 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
779 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
780 int srcX, int srcY, int width, int height, int destX, int destY)
782 cairo_t *cr = cairo_create (c_animBufs[anr+destBuf]);
783 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
784 cairo_rectangle (cr, destX, destY, width, height);
787 if(c_animBufs[anr+destBuf] == csBoardWindow)
788 GraphExpose(currBoard, destX, destY, squareSize, squareSize);
792 SetDragPiece (AnimNr anr, ChessSquare piece)
796 /* [AS] Arrow highlighting support */
799 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
803 cr = cairo_create (cs);
804 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
806 cairo_line_to(cr, arrow[i].x, arrow[i].y);
808 if(appData.monoMode) { // should we always outline arrow?
809 cairo_line_to(cr, arrow[0].x, arrow[0].y);
810 SetPen(cr, 2, "#000000", 0);
811 cairo_stroke_preserve(cr);
813 SetPen(cr, 2, appData.highlightSquareColor, 0);
821 DrawPolygon (Pnt arrow[], int nr)
823 DoDrawPolygon(csBoardWindow, arrow, nr);
824 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);